flat out

US /flæt aʊt/
UK /flæt aʊt/
"flat out" picture
1.

全力以赴, 全速

as fast or as hard as possible

:
He worked flat out to finish the project on time.
全力以赴地工作,以按時完成專案。
The car was going flat out down the highway.
汽車在高速公路上全速行駛。
2.

直截了當, 斷然

directly and clearly; without hesitation or reservation

:
She told him flat out that she wasn't interested.
直截了當地告訴他她不感興趣。
He denied the accusation flat out.
斷然否認了這項指控。